Article
Engineering, Geological
M. Williams, M. Ziegler, Stephan Schennen, S. Loew
Summary: The text presents the results of seismic experiments conducted in two excavation damaged zones (EDZs) in Mont Terri Underground Rock Laboratory. The findings provide valuable insights into the integrity of the rock mass surrounding the excavation and its implications for mid-term safety assessments.
ENGINEERING GEOLOGY
(2022)
Article
Computer Science, Interdisciplinary Applications
Johannes Tornborg, Mats Karlsson, Anders Kullingsjo, Minna Karstunen
Summary: This study presents a benchmark of a rate-dependent constitutive model for soft soils in an instrumented excavation in sensitive clay, showing that the model is capable of capturing the observed response accurately. It emphasizes the importance of rate-dependent models in simulating the complete service life of tunnels and the assessment of installation effects in construction methods and modeling.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Computer Science, Interdisciplinary Applications
Jan Jerman, David Masin
Summary: The newly proposed hypoplastic model was evaluated through modelling the geotechnical failure of a deep excavation of Nicoll Highway in Singapore in 2004. The model demonstrated good comparisons with experimental data and improvements over the original hypoplastic model. Numerical simulations of the excavation collapse showed a good fit with inclinometer data up to the final stages, indicating the significance and effectiveness of the model in predicting such failures.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Mathematics, Interdisciplinary Applications
Albin Wessling, Simon Larsson, Par Jonsen, Jorgen Kajberg
Summary: A new numerical approach based on the Bonded Discrete Element Method was proposed and evaluated for modeling the fracture process of brittle heterogeneous materials, showing a strong correlation between crack initiation and propagation with sample heterogeneities and grain cement strengths.
COMPUTATIONAL PARTICLE MECHANICS
(2022)
Article
Chemistry, Analytical
Xiaorong Wan, Chuan Li, Zhengang Zhao, Dacheng Zhang, Yingna Li, Jiahong Zhang
Summary: A Fiber Bragg Grating stress sensor was developed in this study to measure stress variations in rock, with applications in safety monitoring and stability prediction in underground coal mines. The sensor compensates for environmental temperature disturbances and has shown sensitivity to stress changes in the Excavation Damaged Zone. Monitoring results indicate that the sensor is effective in measuring stress amplitudes and creep times during blasting, providing important data for mine safety.
Article
Engineering, Geological
Chang Xia, Zhen Liu, Cuiying Zhou, Lihai Zhang
Summary: A multiphase numerical model was developed to simulate the rheological deformation of soft rock surrounding a tunnel after excavation. The model considers the coupled meso/macroscale creep and damage processes of the rock, and the predictions agree reasonably well with field monitoring data.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Construction & Building Technology
Nicoletta Bianchini, Nuno Mendes, Chiara Calderini, Paulo B. Lourenco
Summary: This paper studies the dynamic behavior of a reduced scaled dry joint groin vault through simplified micro-modeling based on finite and discrete element methods. The research includes four phases: overview of numerical modeling approaches for cross vaults, calibration of the numerical models based on experimental outputs, qualitative and quantitative comparison of the two modeling strategies, and sensitivity analysis on the influence of recorded inputs. Both numerical models simulate the experimental responses accurately, representing an improvement compared to previous models, and the discrete element method's ability to reproduce the collapse mechanism of the vault is investigated.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Geological
Mountaka Souley, Minh-Ngoc Vu, Gilles Armand
Summary: Understanding the excavation-induced fractured zone (EFZ) is crucial for the disposal of nuclear waste. This study focuses on the 3D numerical modeling of anisotropic responses and short-term convergences of drifts. The proposed model considers the failure of claystone material through fracturing along weakness planes and the failure of the rock matrix. The model is implemented into a commercial numerical software and shows promising results in laboratory and field simulations.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Chemistry, Physical
Haozhe Chen, Zhushan Shao, Zhe Zhang
Summary: This research combines theoretical approach and numerical simulation to understand the initiation mechanism of time-delayed rockburst and the failure laws for surrounding rock after excavation unloading. The study found that time-delayed failure is a result of damage accumulation with crack development during the creep process in surrounding rock.
Article
Engineering, Geological
Huatao Zhao, Ming Tao, Xibing Li, Hitoshi Mikada, Shibo Xu
Summary: The research utilizes the Hoek Brown criteria to calculate the distribution of excavation damaged zone around the cavity at different burial depths, and investigates the dynamic responses of the excavation-damaged cavity under dynamic disturbance using the SEM method. Influencing factors such as the shapes of EDZ, the incident direction of dynamic disturbance, and the dynamic source frequency are identified.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Construction & Building Technology
Changbai Wang, Jimin Liu, Hua Cheng, Haibing Cai
Summary: This paper investigates the excavation-induced disturbance range and mechanism of adjacent pipeline jacking group on surrounding soils. Through field tests and evaluations, it is found that the disturbance intensity is greatly affected by the parallel distance and buried depth.
ADVANCES IN CIVIL ENGINEERING
(2021)
Article
Engineering, Civil
Gianmarco Felice, Domenico Liberatore, Stefano De Santis, Francesca Gobbin, Ivan Roselli, Marialuigia Sangirardi, Omar AlShawa, Luigi Sorrentino
Summary: This paper aims to understand the seismic behavior of stone masonry by simulating the progressive loss of compactness of a real-scale rubble masonry wall. By evaluating the decrease of the fundamental frequency, maximum displacement profile, and amount of cracking, as well as applying different modeling strategies, the study contributes to finding an alternative to the demolition and rebuild approach in preserving architectural heritage while ensuring safety standards.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2022)
Article
Multidisciplinary Sciences
Xianliang Wang, Jianhai Zhang, Li Qian, Tianzhi Yao, Zuguo Mo, Jianhua He, Ru Zhang, Changgui Zhao, Zanbo Qiao
Summary: An energy calculation parameter called the energy dissipation degree (R-Ud) is introduced based on the analysis of the energy dissipation mechanism and characteristics during conventional triaxial tests of granite. Using four stress thresholds, the deviatoric stress-strain curve of rock can be divided into five stages which correspond to four R-Ud thresholds on the energy dissipation degree-strain curve. A new criterion for dividing the excavation damaged zones (EDZs) in the rock surrounding underground caverns is proposed based on the energy dissipation degree-axial strain relationship curve. The method based on R-Ud has the advantage of explicitly probing the boundaries of the undamaged zone (UDZ) of the surrounding rock.
Article
Engineering, Geological
Maksym Chuprin, Prathmesh Naik Parrikar, Mehdi Mokhtari, Asadollah Hayatdavoudi
Summary: This study focused on using Digital Image Correlation (DIC) method to fill the gap in characterizing shale swelling, providing detailed analysis of dynamic tensile strain development and spatial variations in shale-fluid interaction. Experiments revealed diverse effects of salt type and concentration on shale swelling intensity, fracture initiation, and matrix alteration.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Construction & Building Technology
Elide Nastri, Paolo Todisco
Summary: This study investigates the selection of failure criteria for brittle materials in masonry structures, focusing on Mohr-Coulomb, Drucker-Prager, and Concrete Damaged Plasticity criteria. The results show that Concrete Damaged Plasticity criteria are more effective in capturing the actual behavior of masonry walls under monotonic excitation.
Article
Geochemistry & Geophysics
Qi Zhao, Nicola Tisato, Giovanni Grasselli, Omid K. Mahabadi, Andrea Lisjak, Qinya Liu
GEOPHYSICAL JOURNAL INTERNATIONAL
(2015)
Article
Engineering, Geological
Andrea Lisjak, Bryan S. A. Tatone, Omid K. Mahabadi, Giovanni Grasselli, Paul Marschall, George W. Lanyon, Remi de la Vaissiere, Hua Shao, Helen Leung, Christophe Nussbaum
ROCK MECHANICS AND ROCK ENGINEERING
(2016)
Article
Construction & Building Technology
A. Lisjak, B. Garitte, G. Grasselli, H. R. Mueller, T. Vietor
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2015)
Article
Geosciences, Multidisciplinary
Paul Marschall, Silvio Giger, Remi De la Vassiere, Hua Shao, Helen Leung, Christophe Nussbaum, Thomas Trick, Bill Lanyon, Rainer Senger, Andrea Lisjak, Andres Alcolea
SWISS JOURNAL OF GEOSCIENCES
(2017)
Article
Engineering, Civil
Giovanni Grasselli, Andrea Lisjak, Omid K. Mahabadi, Bryan S. A. Tatone
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2015)
Article
Geochemistry & Geophysics
A. Lisjak, Q. Liu, Q. Zhao, O. K. Mahabadi, G. Grasselli
GEOPHYSICAL JOURNAL INTERNATIONAL
(2013)
Article
Engineering, Geological
Andrea Lisjak, Bryan S. A. Tatone, Giovanni Grasselli, Tim Vietor
ROCK MECHANICS AND ROCK ENGINEERING
(2014)
Article
Engineering, Geological
O. K. Mahabadi, A. Lisjak, A. Munjiza, G. Grasselli
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2012)
Article
Computer Science, Interdisciplinary Applications
A. Lisjak, P. Kaifosh, L. He, B. S. A. Tatone, O. K. Mahabadi, G. Grasselli
COMPUTERS AND GEOTECHNICS
(2017)
Proceedings Paper
Engineering, Geological
A. Lisjak, O. K. Mahabadi, P. Kaifosh, T. Vietor, G. Grasselli
ROCK ENGINEERING AND ROCK MECHANICS: STRUCTURES IN AND ON ROCK MASSES
(2014)
Article
Engineering, Geological
Andrea Lisjak, Daniel Figi, Giovanni Grasselli
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2014)
Review
Engineering, Geological
A. Lisjak, G. Grasselli
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2014)
Proceedings Paper
Geochemistry & Geophysics
G. Grasselli, Q. Zhao, A. Lisjak, Q. Liu
ROCK DYNAMICS AND APPLICATIONS - STATE OF THE ART
(2013)